package cn.edu.cqut.base.myview;

import android.content.Context;
import android.graphics.Camera;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ImageView;

/**
 * win8风格ImageView<br>
 * win8ImageView.setOnClickIntent(new Win8ImageView.OnViewClick() {
 * 			public void onClick() { 
 * 			//这里做事件处理
 *  		} 
 *  });
 *  
 * @author chenliang
 * @version v1.0
 * @date 2014-2-20
 * 
 */
public class Win8ImageView extends ImageView
{

	private boolean onAnimation = true;
	private int rotateDegree = 10;

	private boolean isFirst = true;
	private float minScale = 0.95f;
	private int vWidth;
	private int vHeight;
	private boolean isFinish = true, isActionMove = false, isScale = false;
	private Camera camera;

	boolean XbigY = false;
	float RolateX = 0;
	float RolateY = 0;

	OnViewClick onclick = null;

	public Win8ImageView(Context context)
	{
		super(context);
		camera = new Camera();
	}

	public Win8ImageView(Context context, AttributeSet attrs)
	{
		super(context, attrs);
		camera = new Camera();
	}

	public void SetAnimationOnOff(boolean oo)
	{
		onAnimation = oo;
	}

	public void setOnClickIntent(OnViewClick onclick)
	{
		this.onclick = onclick;
	}

	@Override
	protected void onDraw(Canvas canvas)
	{
		super.onDraw(canvas);
		if (isFirst)
		{
			isFirst = false;
			init();
		}
		canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG
				| Paint.FILTER_BITMAP_FLAG));
	}

	public void init()
	{
		vWidth = getWidth() - getPaddingLeft() - getPaddingRight();
		vHeight = getHeight() - getPaddingTop() - getPaddingBottom();
		Drawable drawable = getDrawable();
		BitmapDrawable bd = (BitmapDrawable) drawable;
		bd.setAntiAlias(true);
	}

	@Override
	public boolean onTouchEvent(MotionEvent event)
	{
		super.onTouchEvent(event);
		if (!onAnimation)
			return true;

		switch (event.getAction() & MotionEvent.ACTION_MASK)
		{
		case MotionEvent.ACTION_DOWN:
			float X = event.getX();
			float Y = event.getY();
			RolateX = vWidth / 2 - X;
			RolateY = vHeight / 2 - Y;
			XbigY = Math.abs(RolateX) > Math.abs(RolateY) ? true : false;

			isScale = X > vWidth / 3 && X < vWidth * 2 / 3 && Y > vHeight / 3
					&& Y < vHeight * 2 / 3;
			isActionMove = false;

			if (isScale)
			{
				handler.sendEmptyMessage(1);
			} else
			{
				rolateHandler.sendEmptyMessage(1);
			}
			break;
		case MotionEvent.ACTION_MOVE:
			float x = event.getX();
			float y = event.getY();
			if (x > vWidth || y > vHeight || x < 0 || y < 0)
			{
				isActionMove = true;
			} else
			{
				isActionMove = false;
			}

			break;
		case MotionEvent.ACTION_UP:
			if (isScale)
			{
				handler.sendEmptyMessage(6);
			} else
			{
				rolateHandler.sendEmptyMessage(6);
			}
			break;
		}
		return true;
	}

	public interface OnViewClick
	{
		public void onClick();
	}

	private Handler rolateHandler = new Handler()
	{
		private Matrix matrix = new Matrix();
		private float count = 0;

		@Override
		public void handleMessage(Message msg)
		{
			super.handleMessage(msg);
			matrix.set(getImageMatrix());
			switch (msg.what)
			{
			case 1:
				count = 0;
				BeginRolate(matrix, (XbigY ? count : 0), (XbigY ? 0 : count));
				rolateHandler.sendEmptyMessage(2);
				break;
			case 2:
				BeginRolate(matrix, (XbigY ? count : 0), (XbigY ? 0 : count));
				if (count < getDegree())
				{
					rolateHandler.sendEmptyMessage(2);
				} else
				{
					isFinish = true;
				}
				count++;
				count++;
				break;
			case 3:
				BeginRolate(matrix, (XbigY ? count : 0), (XbigY ? 0 : count));
				if (count > 0)
				{
					rolateHandler.sendEmptyMessage(3);
				} else
				{
					isFinish = true;
					if (!isActionMove && onclick != null)
					{
						onclick.onClick();
					}
				}
				count--;
				count--;
				break;
			case 6:
				count = getDegree();
				BeginRolate(matrix, (XbigY ? count : 0), (XbigY ? 0 : count));
				rolateHandler.sendEmptyMessage(3);
				break;
			}
		}
	};

	private synchronized void BeginRolate(Matrix matrix, float rolateX,
			float rolateY)
	{
		// Bitmap bm = getImageBitmap();
		int scaleX = (int) (vWidth * 0.5f);
		int scaleY = (int) (vHeight * 0.5f);
		camera.save();
		camera.rotateX(RolateY > 0 ? rolateY : -rolateY);
		camera.rotateY(RolateX < 0 ? rolateX : -rolateX);
		camera.getMatrix(matrix);
		camera.restore();
		// 控制中心点
		if (RolateX > 0 && rolateX != 0)
		{
			matrix.preTranslate(-vWidth, -scaleY);
			matrix.postTranslate(vWidth, scaleY);
		} else if (RolateY > 0 && rolateY != 0)
		{
			matrix.preTranslate(-scaleX, -vHeight);
			matrix.postTranslate(scaleX, vHeight);
		} else if (RolateX < 0 && rolateX != 0)
		{
			matrix.preTranslate(-0, -scaleY);
			matrix.postTranslate(0, scaleY);
		} else if (RolateY < 0 && rolateY != 0)
		{
			matrix.preTranslate(-scaleX, -0);
			matrix.postTranslate(scaleX, 0);
		}
		setImageMatrix(matrix);
	}

	private Handler handler = new Handler()
	{
		private Matrix matrix = new Matrix();
		private float s;
		int count = 0;

		@Override
		public void handleMessage(Message msg)
		{
			super.handleMessage(msg);
			matrix.set(getImageMatrix());
			switch (msg.what)
			{
			case 1:
				if (!isFinish)
				{
					return;
				} else
				{
					isFinish = false;
					count = 0;
					s = (float) Math.sqrt(Math.sqrt(minScale));
					BeginScale(matrix, s);
					handler.sendEmptyMessage(2);
				}
				break;
			case 2:
				BeginScale(matrix, s);
				if (count < 4)
				{
					handler.sendEmptyMessage(2);
				} else
				{
					isFinish = true;
					if (!isActionMove && onclick != null)
					{
						onclick.onClick();
					}
				}
				count++;
				break;
			case 6:
				if (!isFinish)
				{
					handler.sendEmptyMessage(6);
				} else
				{
					isFinish = false;
					count = 0;
					s = (float) Math.sqrt(Math.sqrt(1.0f / minScale));
					BeginScale(matrix, s);
					handler.sendEmptyMessage(2);
				}
				break;
			}
		}
	};

	private synchronized void BeginScale(Matrix matrix, float scale)
	{
		int scaleX = (int) (vWidth * 0.5f);
		int scaleY = (int) (vHeight * 0.5f);
		matrix.postScale(scale, scale, scaleX, scaleY);
		setImageMatrix(matrix);
	}

	public int getDegree()
	{
		return rotateDegree;
	}

	public void setDegree(int degree)
	{
		rotateDegree = degree;
	}

	public float getScale()
	{
		return minScale;
	}

	public void setScale(float scale)
	{
		minScale = scale;
	}
}
